Albic's Ring of Pain

An aura radiates from you in a 30-foot Emanation for the duration. While in the aura, any creature that deals damage must succeed a Dexterity saving throw or take magical slashing damage equal to half the damage it did, rounded up. Regardless if it succeeded or failed, it takes an additional 1d6 magical slashing damage. You and allies within this aura are unaffected by this damage.

If an ally that has had their Hit Point maximum reduced starts its turn in the aura, that ally's HIt Point maximum is increased by 1d6 until it reaches its regular maximum.

Higher Level: The dice used in this spell's description are increased by 1d6 for each spell slot level above 5.